Numerous fixes to app-theme
Numerous fixes to app-theme

This set of changes drops support for the grid as we consider it too
experimental right now for more broad use. It also tries to become
consistent with the colors used in the application theme.

ek/polymer-starter-kit,anusornc/polymer-starter-kit,mikaelharsjo/polymer-starter-kit,burakkp/polymer-starter-kit,paul-jean/polymer-starter-kit,Serious-Rage/poligomy,JnJSW/dttdata,RichOren/polymer-starter-kit,napalmdev/polymer-starter-kit,michaetto/f16,kristianmandrup/polymer-starter-kit-plus,pathfinderstudios/polymer-starter-kit,stefanoantonel/brainpower,Joostvanderlaan/polymer-starter-kit-1,neo0rabie/Portfolio,WestchesterPublicLibrary/WPLreports,paddeee/farrel,StartPolymer/polymer-starter-kit-plus,WestchesterPublicLibrary/WPLreports,asternux/polymer-starter-kit,semafloor/semafloor-test-alpha,didrocks/polymer-starter-kit,SB-Technology-Holdings-International/WateringWebClient,ianholing/geowall-project,simonfan/polymer-starter-kit,hocine-h/polymer-starter-kit,pathfinderstudios/polymer-starter-kit,Ex-ante-Labs/shopper.ninja,camargoanderso/polymer-starter-kit,semafloor/semafloor-test-alpha,patsissons/polymer-starter-kit,Sykkro/penny-web,victorgb6/id-questionary,kenjitayama/polymer-starter-kit,gick/reveries-project,tpgmartin/polymer-starter-kit,stevenquiroa/polymer-starter-kit,Negashev/i-kosmetolog,vl4dt/polymer-starter-kit,bright-sparks/polymer-starter-kit,markovuksanovic/polymer-starter-kit,jeffposnick/polymer-starter-kit,yi-jiayu/mahjong-calculator-v2,vfarcic/polymer,vfarcic/polymer,tecla5/site,Awarua-/Agilefant-Times-Polymer-Front-end,semafloor/semafloor-test-alpha,stefanoantonel/ecofit,grouma/web-remote,gick/mobile-polymer-starter-2,arthurvr/polymer-starter-kit,timeu/polymer-starter-kit,FaellCarvalho/Geo-Location,bsparks/polymer-starter-kit,elementron/elementron,gick/reveries-project,SB-Technology-Holdings-International/Water,baberthal/polymer-starter-kit,Ex-ante-Labs/shopper.ninja,budnik/polymer-starter-kit,dennisg/luminis-colleagues,Nzaga/polymer-starter-kit,ragingwind/polymer-starter-kit,trendystore/store,lordoftheflies/mlm-portal,Nzaga/polymer-starter-kit,didrocks/site-julie,kristianmandrup/polymer-starter-kit-plus,DHSDevelopersClub/home-access-client,stevenquiroa/polymer-starter-kit,kenjitayama/polymer-starter-kit,stevenquiroa/thepolymerproject,mtusk/polymer-starter-kit,grebett/polymer-starter-kit,gianluka79/First,simonfan/polymer-starter-kit,hwangc/polymer-starter-kit,samccone/polymer-starter-kit,paul-jean/polymer-starter-kit,felixzapata/polymer-starter-kit,Sykkro/penny-web,michaetto/f16,flaiker/polymer-starter-kit,bdnorg/tmi,noahlaux/polymer-starter-kit,Ex-ante-Labs/pivot-ahead,OscaRoa/polymer-starter-kit,elegant651/polyfolio,RoyKoh/Project-3,StartPolymer/polymer-starter-kit,bright-sparks/polymer-starter-kit,ianholing/geowall-project,Jelle-imitto/tools-polymer,VandeurenGlenn/web-import,MyanmarAPI/data-entry-app,gick/reveries-project,Sykkro/penny-web,Jelle-imitto/tools-polymer,shingo-kumagai/polymer-starter-kit,plusCubed/pluscubed-site,kristianmandrup/polymer-starter-kit,paul-jean/foo-bar-element,ndrd/nodrd-js,bird1235456/polymer-starter-kit,SB-Technology-Holdings-International/Water,elegant651/polyfolio,tecla5/site,mtusk/polymer-starter-kit,stefanoantonel/ecofit,hbx5555/polymer-starter-kit,newrocknj/polymer-starter-kit,StatelessCat/psk-html-importer,datalink747/polymer-starter-kit,napalmdev/polymer-starter-kit,babinux/testsignup,Serious-Rage/poligomy,soonick/polymer-starter-kit,DHSDevelopersClub/home-access-client,egohub/appdesign,klikam/enterprise,jakemac53/polymer-starter-kit,elenadatsiuk/tinkersolomid,liris-tweak/taaabs,natabbotts/blogs.org.uk,StartPolymer/polymer-starter-kit,ndrd/nodrd-js,jdavidagudelo/polymerstarter,hourliert/polymer-starter-kit,stefanoantonel/ecofit,paddeee/farrel,m4h4n/polymer-starter-kit,burakkp/polymer-starter-kit,GNURub/polymer-starter-kit,zmoshansky/polymer-starter-kit,grebett/polymer-starter-kit,MontyNish/polymer-starter-kit,StartPolymer/polymer-starter-kit-plus,SB-Technology-Holdings-International/Water,taranjeetsapra/polymer-starter-kit,jamesthechamp/polymer-starter-kit,DHSDevelopersClub/home-access-client,liris-tweak/taaabs,ek/polymer-starter-kit,andrefuller/PolymerTrailerViewer,babinux/testsignup,jareknowotka/enterprise,didrocks/site-julie,mikaelharsjo/polymer-starter-kit,Negashev/i-kosmetolog,didrocks/site-julie,michaetto/f16,abdonrd/polymer-starter-kit,FaellCarvalho/Geo-Location,lordoftheflies/mlm-portal,OscaRoa/polymer-starter-kit,vl4dt/polymer-starter-kit,baberthal/polymer-starter-kit,alexpaluzzi/polymer-starter-kit,hourliert/polymer-starter-kit,grebett/polymer-starter-kit,didrocks/site-julie,Joostvanderlaan/polymer-starter-kit-1,elenadatsiuk/tinkersolomid,hbx5555/polymer-starter-kit,datalink747/polymer-starter-kit,timeu/polymer-starter-kit,unbug/polymer-starter-kit,TheFinestArtist/HandbellChoir-Web,grouma/web-remote,neo0rabie/Portfolio,hwangc/polymer-starter-kit,altereagle/polymer-starter-kit,blmarket/my-polymer-elements,bird1235456/polymer-starter-kit,bendroid/polymer-starter-kit,taranjeetsapra/polymer-starter-kit,shawnhermans/polymer-starter-kit,JnJSW/dttdata,WestchesterPublicLibrary/WPLreports,robdodson/polymer-starter-kit,markovuksanovic/polymer-starter-kit,uvalib/alderman-renew,ragingwind/polymer-starter-kit,Ex-ante-Labs/pivot-ahead,klarkc/polymer-loopback-starter-kit,lordoftheflies/mlm-portal,M4gn4tor/polymer-starter-kit,HIROSN/polymer-starter-kit,muhanadra/Portfolio,klarkc/polymer-loopback-starter-kit,klikam/enterprise,andrefuller/PolymerTrailerViewer,bdnorg/tmi,SB-Technology-Holdings-International/Water,m4h4n/polymer-starter-kit,Negashev/i-kosmetolog,finch0219/polymer-starter-kit,stephenzsy/charon-frontend,jareknowotka/enterprise,SB-Technology-Holdings-International/WateringWebClient,gick/mobile-polymer-starter-2,StatelessCat/zealous-octo-wookie,jvkops/polymer-starter-kit,alexpaluzzi/polymer-starter-kit,paddeee/farrel,FTG-003/polymer-starter-kit,stephenzsy/charon-frontend,eafelix/polymer-starter-kit,hectorguo/polymer-starter-kit,shingo-kumagai/polymer-starter-kit,bsparks/polymer-starter-kit,RoyKoh/Project-3,WestchesterPublicLibrary/WPLreports,natabbotts/blogs.org.uk,jeffposnick/polymer-starter-kit,MyanmarAPI/data-entry-app,elementron/elementron,be-cloud-js/odoo-dashboard,patilharshali/polymer-starter-kit,gertcuykens/polymer-starter-kit,be-cloud-js/odoo-dashboard,abdonrd/polymer-starter-kit,LM450N/polymer-starter-kit,TheFinestArtist/HandbellChoir-Web,elementron/elementron,budnik/polymer-starter-kit,kristianmandrup/polymer-starter-kit,gertcuykens/polymer-starter-kit,flaiker/polymer-starter-kit,dennisg/luminis-colleagues,1001genomes/admixture-map,bendroid/polymer-starter-kit,RoyKoh/Project-3,noahlaux/polymer-starter-kit,Awarua-/Agilefant-Times-Polymer-Front-end,gianluka79/First,proplanr/polymer-starter-kit,GNURub/polymer-starter-kit,eafelix/polymer-starter-kit,tpgmartin/polymer-starter-kit,sebs/cat-toy,JnJSW/dttdata,klarkc/polymer-loopback-starter-kit,Negashev/negash.ru,newrocknj/polymer-starter-kit,Negashev/negash.ru,egohub/appdesign,MontyNish/polymer-starter-kit,uvalib/wayfinding-kiosk,gianluka79/First,andrefuller/PolymerTrailerViewer,felixzapata/polymer-starter-kit,asternux/polymer-starter-kit,1001genomes/admixture-map,hliyan/polymer-starter-kit,victorgb6/id-questionary,finch0219/polymer-starter-kit,LM450N/polymer-starter-kit,gertcuykens/polymer-starter-kit,fousheezy/ncdc-events,DHSDevelopersClub/home-access-client,didrocks/polymer-starter-kit,pathfinderstudios/polymer-starter-kit,stevenquiroa/thepolymerproject,paul-jean/foo-bar-element,pedrogasg/polypdu,plusCubed/pluscubed-site,talee/flex,RichOren/polymer-starter-kit,soonick/polymer-starter-kit,fousheezy/ncdc-events,victorgb6/id-questionary,anthonybrown/polymer-starter-kit,FaellCarvalho/Geo-Location,HIROSN/polymer-starter-kit,anusornc/polymer-starter-kit,stephenzsy/charon-frontend,SB-Technology-Holdings-International/WateringWebClient,arthurvr/polymer-starter-kit,paul-jean/polymer-starter-kit,paulcbetts/polymer-starter-kit,pedrogasg/polypdu,ragingwind/polymer-starter-kit,jamesthechamp/polymer-starter-kit,patilharshali/polymer-starter-kit,samccone/polymer-starter-kit,blmarket/my-polymer-elements,Jelle-imitto/tools-polymer,altereagle/polymer-starter-kit,hocine-h/polymer-starter-kit,talee/flex,paulcbetts/polymer-starter-kit,SB-Technology-Holdings-International/Water,shauvik/polymer-starter-kit,hliyan/polymer-starter-kit,shauvik/polymer-starter-kit,StatelessCat/psk-html-importer,jimivdw/polymer-starter-kit,markovuksanovic/polymer-starter-kit,anthonybrown/polymer-starter-kit,proplanr/polymer-starter-kit,jimivdw/polymer-starter-kit,zmoshansky/polymer-starter-kit,FTG-003/polymer-starter-kit,gick/mobile-polymer-starter-2,yi-jiayu/mahjong-calculator-v2,uvalib/alderman-renew,trendystore/store,felixzapata/polymer-starter-kit,hectorguo/polymer-starter-kit,Jelle-imitto/tools-polymer,M4gn4tor/polymer-starter-kit,LM450N/polymer-starter-kit,stefanoantonel/brainpower,Serious-Rage/poligomy,jvkops/polymer-starter-kit,Jelle-imitto/tools-polymer,robdodson/polymer-starter-kit,jakemac53/polymer-starter-kit,shawnhermans/polymer-starter-kit,proplanr/polymer-starter-kit,Negashev/negash.ru,muhanadra/Portfolio,alexpaluzzi/polymer-starter-kit,unbug/polymer-starter-kit,sebs/cat-toy,uvalib/wayfinding-kiosk,jdavidagudelo/polymerstarter,VandeurenGlenn/web-import,StatelessCat/zealous-octo-wookie,trendystore/store,SB-Technology-Holdings-International/WateringWebClient,camargoanderso/polymer-starter-kit,patsissons/polymer-starter-kit